Yep, you can. They're having a real problem w/it. People get these animals when they're little as pets. Then, when they get to a certain size, they're no longer that easy to handle and are more work than the person was expecting, so they let them loose. They have breeding populations of some non-native species that are pushing the native animals out.
And actually, it's not a new problem. Years ago, someone wanted all the species of birds mentioned in Shakespeare's plays in the US. So, they released starlings. And, starlings are a big problem. Then there are those that are released accidentally, like gypsy moths. Or even plants brought in to stop erosion, like kudzu, or multiflora rose. While these plants and animals might not be a problem in terms of threatening our lives, they're still a problem.